Title:
Improved predictions for g-2 of the muon and α_{\rm QED}(M_Z^2)

Abstract: We update the Standard Model predictions of the anomalous magnetic moment of
the muon, a_\mu = (g-2)/2, and the value of the QED coupling at the Z-boson
mass, incorporating the new e^+e^- \to \pi\pi data obtained by CMD-2 and KLOE,
as well as the corrected SND data, and other improvements. The prediction for
a_\mu=11659180.4 (5.1) \times 10^{-10} is about 3 \times 10^{-10} lower than
before, and has a smaller uncertainty, which corresponds to a 3.4\sigma
deviation from the measured value. The prediction for the QED coupling is
\alpha(M_Z^2)^{-1}= 128.937 \pm 0.030.